The concept stems from the fact that this beer comes from a small brewery in Atlanta, GA and can only be found in the Southeast. Anywhere outside of The South isn't "America." It's a Southern thing and you wouldn't get it if you're not from the south.

I'm only guessing here, but I have a feeling the copy was written by the designers, essentially as an alternative to greeking, and somebody over at corporate liked it, so it stayed. That's not high praise, by the way.